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11/9/2018 9:21:38 PM
Posted: 3/11/2005 3:29:40 PM EST
[Last Edit: 3/12/2005 6:10:31 PM EST by jonemtp]
I have a 2.5 generation Glock 27 and after the serial number on the barrel there is an octagon symbol. Can someone tell me what this means? Thanks in advance for the info.

www.imageshack.us]
Link Posted: 3/11/2005 5:25:51 PM EST
[Last Edit: 3/11/2005 5:58:16 PM EST by Xtra]
Hint: Octagonal Rifling

Actually, I suspect the symbol on your barrel is a pentagon.
Link Posted: 3/11/2005 5:31:05 PM EST

Originally Posted By Xtra:
Hint: Octagonal Rifling



I was thinking the same thing but my G19 barrel has a pentagon proof mark an I know that has nothing to do with the rifling.

IIRC the pentagon had something to do with the steel used for the barrel so I'm wondering if the octagon is along those same lines?
Link Posted: 3/11/2005 5:54:26 PM EST

Originally Posted By M4arc:
IIRC the pentagon had something to do with the steel used for the barrel so I'm wondering if the octagon is along those same lines?



Could be. I always thought it was sort of a generic symbol representing the "polygonal" type of rifling.
Link Posted: 3/12/2005 2:31:42 AM EST
Is this a standard marking on all Glock barrels? I had a G22 a few years ago and I do not recall seeing any markings on the barrel...or maybe I just can't remember.
Link Posted: 3/12/2005 4:22:49 AM EST
It is a proof mark, probably showing the barrel has successfully fired an over pressure or double charged cartride.
Link Posted: 3/12/2005 5:10:05 AM EST

Originally Posted By jonemtp:
Is this a standard marking on all Glock barrels? I had a G22 a few years ago and I do not recall seeing any markings on the barrel...or maybe I just can't remember.



I believe that way back when, the Glocks assembled in Austria used to have a NPv or somthing like that instead. Is that what your old one had?
Link Posted: 3/12/2005 5:28:19 AM EST

Originally Posted By BrianNH:
It is a proof mark, probably showing the barrel has successfully fired an over pressure or double charged cartride.



DOUBLE CHAGRE!!! And it didn't go Kb?



Just kidding
Link Posted: 3/12/2005 5:43:38 AM EST
[Last Edit: 3/12/2005 5:45:46 AM EST by Xtra]

Originally Posted By M4arc:

I believe that way back when, the Glocks assembled in Austria used to have a NPv or somthing like that instead. Is that what your old one had?



Hey, Hey! I think you are on to something!

Proof Marks
Link Posted: 3/12/2005 6:12:53 PM EST
pics added...sorry for the size
Link Posted: 3/12/2005 7:57:51 PM EST
damn that pentagon is new to me never seen that before hehe

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